
/**
 * 自定义插件$("#id").serializeJson();//将表单序列化为Json数据
 * 包含图片上传插件
 */
(function($){
    /**
     * 将form表单序列化为json
     * @returns {{}}
     */
    $.fn.serializeJson=function(){
        var serializeObj={};
        var array=this.serializeArray();
        var str=this.serialize();
        $(array).each(function(){
            if(serializeObj[this.name]){
                if($.isArray(serializeObj[this.name])){
                    console.log(this.name);
                    serializeObj[this.name].push(this.value);
                }else{
                    serializeObj[this.name]=[serializeObj[this.name],this.value];
                }
            }else{
                serializeObj[this.name]=this.value;
            }
        });
        return serializeObj;
    };
    /**
     * ajax图片提交插件
     */
    $.extend({
        handleError: function( s, xhr, status, e ) {
            // If a local callback was specified, fire it
            if ( s.error ) {
                s.error.call( s.context || window, xhr, status, e );
            }
            // Fire the global callback
            if ( s.global ) {
                (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] );
            }
        },
        httpData: function (xhr, type, s) {
            var ct = xhr.getResponseHeader("content-type"),
                xml = type == "xml" || !type && ct && ct.indexOf("xml") >= 0,
                data = xml ? xhr.responseXML : xhr.responseText;
            if (xml && data.documentElement.tagName == "parsererror")
                throw "parsererror";
            if (s && s.dataFilter)
                data = s.dataFilter(data, type);
            if (typeof data === "string") {
                if (type == "script")
                    jQuery.globalEval(data);
                if (type == "json")
                    data = window["eval"]("(" + data + ")");
            }
            return data;
        },

        createUploadIframe: function(id, uri)
        {
            //create frame
            var frameId = 'jUploadFrame' + id;

            if(window.ActiveXObject) {
                var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
                if(typeof uri== 'boolean'){
                    io.src = 'javascript:false';
                }
                else if(typeof uri== 'string'){
                    io.src = uri;
                }
            }
            else {
                var io = document.createElement('iframe');
                io.id = frameId;
                io.name = frameId;
            }
            io.style.position = 'absolute';
            io.style.top = '-1000px';
            io.style.left = '-1000px';

            document.body.appendChild(io);

            return io
        },
        createUploadForm: function(id, fileElementId)
        {
            //create form
            var formId = 'jUploadForm' + id;
            var fileId = 'jUploadFile' + id;
            var form = $('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
            var oldElement = $('#' + fileElementId);
            var newElement = $(oldElement).clone();
            $(oldElement).attr('id', fileId);
            $(oldElement).before(newElement);
            $(oldElement).appendTo(form);
            //set attributes
            $(form).css('position', 'absolute');
            $(form).css('top', '-1200px');
            $(form).css('left', '-1200px');
            $(form).appendTo('body');
            return form;
        },

        ajaxFileUpload: function(s) {
            // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout
            s = jQuery.extend({}, jQuery.ajaxSettings, s);
            var id = new Date().getTime();
            var form = jQuery.createUploadForm(id, s.fileElementId);
            var io = jQuery.createUploadIframe(id, s.secureuri);
            var frameId = 'jUploadFrame' + id;
            var formId = 'jUploadForm' + id;
            // Watch for a new set of requests
            if ( s.global && ! jQuery.active++ )
            {
                jQuery.event.trigger( "ajaxStart" );
            }
            var requestDone = false;
            // Create the request object
            var xml = {};
            if ( s.global )
                jQuery.event.trigger("ajaxSend", [xml, s]);
            // Wait for a response to come back
            var uploadCallback = function(isTimeout)
            {
                var io = document.getElementById(frameId);
                try
                {
                    if(io.contentWindow)
                    {
                        xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
                        xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;

                    }else if(io.contentDocument)
                    {
                        xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
                        xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
                    }
                }catch(e)
                {
                    jQuery.handleError(s, xml, null, e);
                }
                if ( xml || isTimeout == "timeout")
                {
                    requestDone = true;
                    var status;
                    try {
                        status = isTimeout != "timeout" ? "success" : "error";
                        // Make sure that the request was successful or notmodified
                        if ( status != "error" )
                        {
                            // process the data (runs the xml through httpData regardless of callback)
                            var data = jQuery.uploadHttpData( xml, s.dataType );
                            // If a local callback was specified, fire it and pass it the data
                            if ( s.success )
                                s.success( data, status );

                            // Fire the global callback
                            if( s.global )
                                jQuery.event.trigger( "ajaxSuccess", [xml, s] );
                        } else
                            jQuery.handleError(s, xml, status);
                    } catch(e)
                    {
                        status = "error";
                        jQuery.handleError(s, xml, status, e);
                    }

                    // The request was completed
                    if( s.global )
                        jQuery.event.trigger( "ajaxComplete", [xml, s] );

                    // Handle the global AJAX counter
                    if ( s.global && ! --jQuery.active )
                        jQuery.event.trigger( "ajaxStop" );

                    // Process result
                    if ( s.complete )
                        s.complete(xml, status);

                    jQuery(io).unbind();

                    setTimeout(function()
                    {	try
                    {
                        $(io).remove();
                        $(form).remove();

                    } catch(e)
                    {
                        jQuery.handleError(s, xml, null, e);
                    }

                    }, 100);

                    xml = null

                }
            };
            // Timeout checker
            if ( s.timeout > 0 )
            {
                setTimeout(function(){
                    // Check to see if the request is still happening
                    if( !requestDone ) uploadCallback( "timeout" );
                }, s.timeout);
            }
            try
            {
                // var io = $('#' + frameId);
                var form = $('#' + formId);
                $(form).attr('action', s.url);
                $(form).attr('method', 'POST');
                $(form).attr('target', frameId);
                if(form.encoding)
                {
                    form.encoding = 'multipart/form-data';
                }
                else
                {
                    form.enctype = 'multipart/form-data';
                }
                $(form).submit();

            } catch(e)
            {
                jQuery.handleError(s, xml, null, e);
            }
            if(window.attachEvent){
                document.getElementById(frameId).attachEvent('onload', uploadCallback);
            }
            else{
                document.getElementById(frameId).addEventListener('load', uploadCallback, false);
            }
            return {abort: function () {}};

        },

        uploadHttpData: function( r, type ) {
            var data = !type;
            data = type == "xml" || data ? r.responseXML : r.responseText;
            // If the type is "script", eval it in global context
            if ( type == "script" )
                jQuery.globalEval( data );
            // Get the JavaScript object, if JSON is used.
            if ( type == "json" ) {

                //eval( "data = " + data );
                if(data.indexOf('<pre>') != -1) {
                    data = data.substring(5, data.length-6);
                }
                eval("data = \" "+data+" \" ");
            }
            // evaluate scripts within html
            if ( type == "html" )
                jQuery("<div>").html(data).evalScripts();
            //alert($('param', data).each(function(){alert($(this).attr('value'));}));
            return data;
        }
    })
})($);
